<template>
  <div class="about">
    <div class="block">
      <span class="demonstration">默认 click 触发子菜单</span>
      <el-cascader
        v-model="value"
        :options="options"
        @change="handleChange"></el-cascader>
    </div>
    <div class="block">
      <span class="demonstration">hover 触发子菜单</span>
      <el-cascader
        v-model="value"
        :options="options"
        :props="{ expandTrigger: 'hover' }"
        @change="handleChange"></el-cascader>
    </div>
  </div>
</template>
<script>
	export default{
		 data() {
		      return {
		        value: [],
		        options: [{
		          value: 'zhinan',
		          label: '指南',
		          children: [{
		            value: 'shejiyuanze',
		            label: '设计原则',
		            children: [{
		              value: 'yizhi',
		              label: '一致'
		            }, {
		              value: 'fankui',
		              label: '反馈'
		            }, {
		              value: 'xiaolv',
		              label: '效率'
		            }, {
		              value: 'kekong',
		              label: '可控'
		            }]
		          }, {
		            value: 'daohang',
		            label: '导航',
		            children: [{
		              value: 'cexiangdaohang',
		              label: '侧向导航'
		            }, {
		              value: 'dingbudaohang',
		              label: '顶部导航'
		            }]
		          }]
		        }, {
		          value: 'zujian',
		          label: '组件',
		          children: [{
		            value: 'basic',
		            label: 'Basic',
		            children: [{
		              value: 'layout',
		              label: 'Layout 布局'
		            }, {
		              value: 'color',
		              label: 'Color 色彩'
		            }, {
		              value: 'typography',
		              label: 'Typography 字体'
		            }, {
		              value: 'icon',
		              label: 'Icon 图标'
		            }, {
		              value: 'button',
		              label: 'Button 按钮'
		            }]
		          }, {
		            value: 'form',
		            label: 'Form',
		            children: [{
		              value: 'radio',
		              label: 'Radio 单选框'
		            }, {
		              value: 'checkbox',
		              label: 'Checkbox 多选框'
		            }, {
		              value: 'input',
		              label: 'Input 输入框'
		            }, {
		              value: 'input-number',
		              label: 'InputNumber 计数器'
		            }, {
		              value: 'select',
		              label: 'Select 选择器'
		            }, {
		              value: 'cascader',
		              label: 'Cascader 级联选择器'
		            }, {
		              value: 'switch',
		              label: 'Switch 开关'
		            }, {
		              value: 'slider',
		              label: 'Slider 滑块'
		            }, {
		              value: 'time-picker',
		              label: 'TimePicker 时间选择器'
		            }, {
		              value: 'date-picker',
		              label: 'DatePicker 日期选择器'
		            }, {
		              value: 'datetime-picker',
		              label: 'DateTimePicker 日期时间选择器'
		            }, {
		              value: 'upload',
		              label: 'Upload 上传'
		            }, {
		              value: 'rate',
		              label: 'Rate 评分'
		            }, {
		              value: 'form',
		              label: 'Form 表单'
		            }]
		          }, {
		            value: 'data',
		            label: 'Data',
		            children: [{
		              value: 'table',
		              label: 'Table 表格'
		            }, {
		              value: 'tag',
		              label: 'Tag 标签'
		            }, {
		              value: 'progress',
		              label: 'Progress 进度条'
		            }, {
		              value: 'tree',
		              label: 'Tree 树形控件'
		            }, {
		              value: 'pagination',
		              label: 'Pagination 分页'
		            }, {
		              value: 'badge',
		              label: 'Badge 标记'
		            }]
		          }, {
		            value: 'notice',
		            label: 'Notice',
		            children: [{
		              value: 'alert',
		              label: 'Alert 警告'
		            }, {
		              value: 'loading',
		              label: 'Loading 加载'
		            }, {
		              value: 'message',
		              label: 'Message 消息提示'
		            }, {
		              value: 'message-box',
		              label: 'MessageBox 弹框'
		            }, {
		              value: 'notification',
		              label: 'Notification 通知'
		            }]
		          }, {
		            value: 'navigation',
		            label: 'Navigation',
		            children: [{
		              value: 'menu',
		              label: 'NavMenu 导航菜单'
		            }, {
		              value: 'tabs',
		              label: 'Tabs 标签页'
		            }, {
		              value: 'breadcrumb',
		              label: 'Breadcrumb 面包屑'
		            }, {
		              value: 'dropdown',
		              label: 'Dropdown 下拉菜单'
		            }, {
		              value: 'steps',
		              label: 'Steps 步骤条'
		            }]
		          }, {
		            value: 'others',
		            label: 'Others',
		            children: [{
		              value: 'dialog',
		              label: 'Dialog 对话框'
		            }, {
		              value: 'tooltip',
		              label: 'Tooltip 文字提示'
		            }, {
		              value: 'popover',
		              label: 'Popover 弹出框'
		            }, {
		              value: 'card',
		              label: 'Card 卡片'
		            }, {
		              value: 'carousel',
		              label: 'Carousel 走马灯'
		            }, {
		              value: 'collapse',
		              label: 'Collapse 折叠面板'
		            }]
		          }]
		        }, {
		          value: 'ziyuan',
		          label: '资源',
		          children: [{
		            value: 'axure',
		            label: 'Axure Components'
		          }, {
		            value: 'sketch',
		            label: 'Sketch Templates'
		          }, {
		            value: 'jiaohu',
		            label: '组件交互文档'
		          }]
		        }]
		      };
		    },
		    methods: {
		      handleChange(value) {
		        console.log(value);
		      }
		    }
	}
</script>
